Structure of the rabbit ryanodine receptor RyR1 at near-atomic resolution.
Structure of the rabbit ryanodine receptor RyR1 at near-atomic resolution.
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近原子分辨率下兔兰尼碱受体 RyR1 的结构。
DOI:
10.1038/nature14063
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发表时间:
2015-01-01
期刊:
影响因子:
64.8
通讯作者:
Yan, Nieng
中科院分区:
文献类型:
--
作者:
Yan, Zhen;Bai, Xiao-chen;Yan, Chuangye;Wu, Jianping;Li, Zhangqiang;Xie, Tian;Peng, Wei;Yin, Chang-cheng;Li, Xueming;Scheres, Sjors H. W.;Shi, Yigong;Yan, Nieng
The ryanodine receptors (RyRs) are high-conductance intracellular Ca2+ channels that play a pivotal role in the excitation-contraction coupling of skeletal and cardiac muscles. RyRs are the largest known ion channels, with a homotetrameric organization and approximately 5000 residues in each protomer. Here we report the structure of the rabbit RyR1 in complex with its modulator FKBP12 at an overall resolution of 3.8 Å, determined by single-particle electron cryo-microscopy. Three previously uncharacterized domains, named Central, Handle, and Helical domains, display the armadillo repeat fold. These domains, together with the amino-terminal domain, constitute a network of superhelical scaffold for binding and propagation of conformational changes. The channel domain exhibits the voltage-gated ion channel superfamily fold with distinct features. A negative charge-enriched hairpin loop connecting S5 and the pore helix is positioned above the entrance to the selectivity filter vestibule. The four elongated S6 segments form a right-handed helical bundle that closes the pore at the cytoplasmic border of the membrane. Allosteric regulation of the pore by the cytoplasmic domains is mediated through extensive interactions between the Central domains and the channel domain. These structural features explain high ion conductance by RyRs and the long-range allosteric regulation of channel activities.
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影响因子:
48
作者:
Kucukelbir, Alp;Sigworth, Fred J.;Tagare, Hemant D.
通讯作者:
Tagare, Hemant D.
影响因子:
48
作者:
Li, Xueming;Mooney, Paul;Zheng, Shawn;Booth, Christopher R.;Braunfeld, Michael B.;Gubbens, Sander;Agard, David A.;Cheng, Yifan
通讯作者:
Cheng, Yifan
影响因子:
64.8
作者:
ENDO, M;TANAKA, M;OGAWA, Y
通讯作者:
OGAWA, Y
影响因子:
7.8
作者:
Franzini-Armstrong, C
通讯作者:
Franzini-Armstrong, C
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH